lesson 5 Flashcards
two main parts of a needle
hub and shaft
3 parts of a shaft
lumen, bevel, and point
TRUE OR FALSE: Gauge number is inversely proportional to diameter.
TRUE: The larger the number, the smaller the core size
Gauge number used for blood donation
16G
Gauge number used for blood tranfusion
18G
gauge number recommended for adults by CLSI; most commonly used
21G
gauge number recommended for children
23G
gauge number recommended for thin/small veins
25G
used for Mantoux skin test or Purified Protein Derivative (PPD)
27G
2 main parts of a syringe
plunger and barrel
considered an open system of blood collection since blood is exposed to the environment and healthcare professionals; prone to contamination
needle and syringe method
closed system of blood collection because blood drawn passes directly into the tube with no exposure to the environment or to healthcare professionals; two-way system
evacuated tube system
evacuated tube system includes:
-multisample needle
-a tube adaptor/holder
-sample tubes
TRUE OR FALSE: The longer the blood collection time, the lower the chance of injury.
FALSE: The longer the blood collection time, the higher the chance of injury.
liquid portions of whole blood
plasma and serum
liquid portion of unclotted blood; has unused fibrinogen
plasma
liquid portion of clotted blood
serum
3 layers of plasma
-plasma
-buffy coat
-unclotted rbc
2 layers of serum
-serum
-clotted rbc
Centrifuge separates based on __________.
specific gravity/weight
separates rbc from serum or plasma
thixotropic gel
no additive; plastic needs inversion, glass serves as clot activator (no inversion)
red top
4 layers of blood in GOLD TOP
-serum
-buffy coat
-serum separator gel
-clotted rbc
YELLOW TOP ADDITIVES
-Sodium Polyanethol Sulfonate (SPS)
-Acid Citrate Dextrose (ACD)
